how safw r ctr pistons in a usdm b18c would i need anything in particular for a daily driver???

 

searched and found answer

 

B18C GSR Head ~11.8comp

B18C Type-R or B16 Head ~11.6comp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by No_Fear &raquo;</TD></TR><TR><TD CLASS="quote">B18C GSR Head ~11.8comp

B18C Type-R or B16 Head ~11.6comp

</TD></TR></TABLE>

More like 13:1.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D-Rob &raquo;</TD></TR><TR><TD CLASS="quote">

More like 13:1. </TD></TR></TABLE>

like Derek said, much too high. Go with a jdm itr piston instead

 

Here's the actual calculations:

PR3 head/B18C Block

STD = 12.58636786521145
.25 OS = 12.649248792586258

P72 head/B18C Block

STD = 12.924594026551906
.25 OS = 12.989047869209281

 

PR3 head/B18C Block

.25 OS = 12.649248792586258
WOW. i wonder how long my itr would last with stock ecu on 91 octane.

 

Dam " 00Red_SiR " You kick alot of good knowledge
man, keep up the good work. Helps us out big time, You need to right a book, And the cover should have a big big school bus...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rjgerolaga &raquo;</TD></TR><TR><TD CLASS="quote">
WOW. i wonder how long my itr would last with stock ecu on 91 octane.
</TD></TR></TABLE>

You could switch the car over to E85 (85% ethanol is 106 octane) and run that compression no problem. The good news is that E85 is usually cheaper than 87octane gasoline and it makes more power than race gas. You just need 25% bigger injectors, and a dyno tune. You also loose 25% gas mileage...

 

car is strong and run ok with 91 but feels like its holding back a little. but with 100 it really shine and my gas mileage still the same when it was stock. also running in stock ecu.